DVB--T af9015 error

hi, 

downloaded today latest openpli4 for vu+solo and dvb-t is not working any more.

i download drivers for af9015 usb dvb-t, but still the same. in tuner configuration is shown, but when trying to scan i receive this error : ERROR: - failed to scan ( error starting scanning)

when i zap to dvb-t channel i receive error : service unavailable , check tuner configuration

help needed..

thanks

by

kikan

image from 12/1/2016 was o.k. but i had problems with some vod playback, so tried new image today..